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Nowadays, most lanterns come with many shapes and sizes．

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There are some lit candles on the desk．

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Mr．Smith is said that have been to many other countries．

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Among them were Sharon MacAuliffe, a high school teacher, who was to be the first teacher in space．

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Seven American astronauts died when Challenger exploded soon after it launching．

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In course of space exploration, 434 astronauts have made the journey into space．

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In Eva’s story a girl rescued a dog off a burning building．

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I’m sorry I’m too busy not to help you．

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As the development of medical science, more and more diseases will be cured．

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I’m getting on very good with the villagers here．